Welcome to healthcare Magic!
Do not consider the sciatic thing to be sitting behind the great wall of China!
It is Sciatic nerve
that has been hit inadvertently, it is good the you have used a drug that was of a less concentration or less caustic and you are lucky that you have only nominal problem felt and left.
I hope you will recover fully in coning two week's time.
No need to do anything except to limit excess exertion on the affected side. Have ample rest.
Wish you a great health!